1. name each part of the volcano today’s standard: 4.34.3 - the student will describe how...
TRANSCRIPT
5 Minute Check11/23/15
1. Name each part of the volcano
Today’s Standard:4.3 - The student will describe how landforms are the result of a combination of constructive and destructive
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Constructive Force Destructive Force
Take out our notes from yesterday
Two Types of Forces Destructive Forces: processes that
destroys or breakdown landforms.◦ 2 types: Slow (weathering) and Fast (Erosion)◦ Ex. landslides, volcanic eruptions, earthquakes,
floods
Constructive forces: forces that build up an existing landform or create a new one. ◦ Caused by: water, gravity, wind and glaciers.◦ Ex: deposition, landslides, volcanic eruptions,
floods
Destructive forces – destroy and wear away landmasses through processes like weathering and erosion.
◦ Weathering – wearing by wind, precipitation, freezing/thawing◦ Erosion – wearing down & carrying away of land by natural forces
Destructive forces are those that are recycling the Earth, like Earthquakes and plate movement.
Destructive forces are those that relocate crust, like when wind erodes or takes away some of the sand on a sand dune or beach.
Farming is a destructive process, because the soil has to be dug up and moved around in order to grow plants.
Mining is another destructive process, because we dig holes into the earth or blow up parts of the earth and/or caves in order to get what we want.
Constructive and Destructive processes
Weathering Weathering: a slow, destructive force that
breaks rocks into smaller pieces called sediments. Can be by a physical (mechanical) or chemical process.
Weathering Pictures
Mechanical weathering: the breaking of rock into smaller pieces by forces due to gravity, ice, plant roots, or other physical forces.
Chemical Weathering: the changing of materials in a rock by chemical processes.
Erosion Erosion: the destructive movement of
materials away from one place by wind, water, ice and gravity.
Wave Erosion- caused by waterWind Erosion (Dust Storm)
Grand Canyon Video
Landslides
Landslides: occur when gravity quickly pulls rock and dirt downhill.
Floods Floods: a great flow of water over an area
that is usually dry land.
Volcanic Eruptions
Volcano: an opening in the Earth’s crust through which steam, lava and ashes erupt.
Cause both destructive and constructive changes to landforms.
Mount St. Helens
Saint Helen’s Before
Saint Helen’s After
Mount St. Helens Video
Volcanoes can be constructive, but also destructive…
Earthquakes
Earthquakes: the shaking of Earth’s surface caused by the release of energy along a fault.
San Andreas Fault, California
Volcanoes & EarthquakesTectonic Plates, Volcanoes & Earthquakes
The Ring of Fire has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes. About 90% of the world's earthquakes and 81% of the world's largest earthquakes occur along the Ring of Fire.
Constructive forces – shape earth’s surface by building up mountains, volcanoes and other landmasses caused by plate movements. It makes positive changes!
Examples:◦When sand is deposited onto a river bank by the
running water. This builds up the river bank, making it higher.
◦A volcano erupting. This builds up the land around the volcano, making it higher.
Constructive and Destructive processes
Constructive Process
Any type of geological event where land is uplifted.
Uplift- the movement of fault block (normal fault)
Mountain Building- the convergence of two plates
Constructive forces built up the Himalayas
Erosion & Deposition
Deposition: the placing of materials in a new place (constructive force).
Ex. Sandbars
Water Erosion & Deposition River Delta-
Deposits of sediment at the mouth of the Mississippi River creating new land called a delta.
Wind Erosion & Deposition Sand Dunes- sand is moved by wind
Desert Sand Dunes Ocean Sand Dunes
The Bernard Glacier in Alaska's Saint Elias Mountains
Grand Canyon – sandstone rock
New York – lichen on granite; secrete chemicals that break down rock
Is it a Constructive & Destructive Force?
List examples of constructive and destructive forces.
Closing
5 Minute Check11/24/15
1. Give an example of a Constructive and a Destructive force? Then explain why it is constructive or destructive, remember some things fall into both categories.
Today’s Standard:4.3 - The student will describe how landforms are the result of a combination of constructive and destructive
Tomorrow is our test on Constructive and Destructive forces. Study your green notebook.
Monday we are turning in your green notebooks so make sure you have all your notes.
Monday we are doing BYOD so make sure you have your devices here for class
Taking care of business:
What makes something a destructive force?◦ It destroys or breakdown landforms
What makes something a constructive force?◦ It builds up an existing landform or creates new
land
Let’s review
video
Constructive and Destructive Forces Video
Let’s review: Destructive ProcessWeathering: Breaking down rock into smaller pieces
Chemical Example
Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals.
acid rain breaks down rocks like in granite gravestones and statues
Let’s review: Destructive ProcessWeathering: Breaking down rock into smaller pieces
Mechanical Example
the use of mechanical force to break apart rocks (Physical)
Plants growing in sidewalk
A-Chemical Weathering
B-Mechanical Weathering
Let’s try some examples
1What type of weathering is this?
A-Chemical WeatheringB-Mechanical Weathering
1What type of weathering is this?
A-Chemical WeatheringB-Mechanical Weathering
Chemical Weatherin
g
2What type of weathering is this?
A-Chemical WeatheringB-Mechanical Weathering
2What type of weathering is this?
A-Chemical WeatheringB-Mechanical Weathering
Mechanical Weatherin
g
3What type of weathering is this?
A-Chemical WeatheringB-Mechanical Weathering
3What type of weathering is this?
A-Chemical WeatheringB-Mechanical Weathering
4What type of weathering is this?
A-Chemical WeatheringB-Mechanical Weathering
4What type of weathering is this?
A-Chemical WeatheringB-Mechanical Weathering
Let’s review: Destructive ProcessErosion- the process of moving sediment
Water Brings weathered materials from their source to another location where they are deposited.
• Ex. Oceans and rivers
Wind Picks materials temporarily up and transports them to another location where they are deposited, and either stored or re-mobilized and transported to another location.
• Ex. Moving soil or sand at sand dunes
Ice Particles are plucked up or incorporated by moving ice and are transported downhill
• Ex. Moving land and glaciers
Gravity
facilitates the down slope transportation of loosened, weathered materials and enables them to move without the aid of water, wind, or ice.
• Ex. Landslide
Video
Video - StudyJams Weathering and Erosion
Examples:◦ Earthquakes
Caused by moving plates: Convergent plates that give us mountain ranges Divergent plates bring new land where they are dividing
Caused by faults: Normal faults give us uplift which gives us more crust
◦ Volcanoes After the lava leaves the volcano it hardens to give is new land
◦ Floods After a flood, material is deposited at a new location
◦ Landslide At the bottom of a landslide new material gets deposited
◦ Sand dunes◦ Deltas
Let’s review: Constructive Forces
Let’s look at images from Nevada and our surrounding areas and discuss whether or
not they were formed by a constructive or a destructive
force
Using your clickers:A- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada
pine tree eroded by wind
5. Nevada’s Great Basin National ParkA- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada
pine tree eroded by wind
5. Nevada’s Great Basin National ParkA- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada6. Lake Tahoe – created by a normal faultA- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada6. Lake Tahoe – created by a normal faultA- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada7. Sierra Nevada MountainsA- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada7. Sierra Nevada MountainsA- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada8. Spring Mountain Range (Mt. Charleston)A- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada8. Spring Mountain Range (Mt. Charleston)A- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada9. Red Rock Canyon A- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada9. Red Rock Canyon A- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada10. Valley of FireA- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada10. Valley of FireA- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples other than NV11. Grand CanyonA- Constructive B-Destructive
Is it a Constructive & Destructive Force?Let’s look at examples other than NV11. Grand CanyonA- Constructive B-Destructive
Video
Weathering and Erosion Song
We have discussed a lot of different things that are considered a constructive and a destructive force. What can be considered both? Why?
Closing
5 Minute Check11/25/15
1. What are all the names for the hot stuff that comes out of volcanos?
Today’s Standard:4.3 - The student will describe how landforms are the result of a combination of constructive and destructive
Monday we are using our devices for a few minutes in class, please bring your id with the sticker and your device to class.
Taking care of business
Test of constructive and destructive forces
Geological Processes
Video